EF connection string as DbContext constructor argument

Question

I have seen some code sample that put an entity framework connection string as a constructor argument when creating a new DbContext. But when I added a new ADO.NET entity da

Answer 1

The new data model wizard adds a connection string to your config file and the code generation is setup to create a context with a parameterless constructor that then calls the base constructor with "name=foo" so that the connection string in the config file will be used.

If you want to explicitly pass a connection string to the constructor (instead of reading it from config) then you can use the fact that the context is a partial class to add that constructor. You could also modify the T4 code generation template to change the constructor that is generated.